20715812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 41094144

約数和(自身を除く): 20378332

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 71, 124, 142, 181, 284, 362, 403, 724, 806, 923, 1612, 1846, 2201, 2353, 3692, 4402, 4706, 5611, 8804, 9412, 11222, 12851, 22444, 25702, 28613, 51404, 57226, 72943, 114452, 145886, 167063, 291772, 334126, 398381, 668252, 796762, 1593524, 5178953, 10357906, 20715812]

約数ペア:

[(1, 20715812), (2, 10357906), (4, 5178953), (13, 1593524), (26, 796762), (31, 668252), (52, 398381), (62, 334126), (71, 291772), (124, 167063), (142, 145886), (181, 114452), (284, 72943), (362, 57226), (403, 51404), (724, 28613), (806, 25702), (923, 22444), (1612, 12851), (1846, 11222), (2201, 9412), (2353, 8804), (3692, 5611), (4402, 4706)]